Fifth-wheel.



Patented July 25, I899.

I No. 629,500.

M. J. GBIFFIN'KL 4. PULLAR.

FlFTH WHEEL. (Ap lication filed. Apr. 7, 189B.)

1N0 Model.)

1742322 asses:

gya wk 1 7% z .TATES j FIFTH-WHEEL.

srncrrrca'rron formmg part a Letters Patent-No. eaasoae td J'nly ;,1t9' 1 Application filed April '7, 1899.

Be it known that we, MICHAEL J. GRIFFIN and JAMES PULLAR,Of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Fifth-Wheels, of which the following is a full, clear, and exact description, whereby any one skilled in the art can make and use the same.

Our invention relates to the class'of devices used in the connection between'an axle and the body part ot' a vehicle for permitting rotary movement of the former; and the object of our invention is to provide a device of this class that may be easily and quickly assembled or taken apart for any purpose and also one that shall firmly support and connect the parts without lateral movement.

To this end our invention consists in the device as a whole, in the combination of parts, and inthe details and their combination, as hereinafter described, and more particularly pointed out in the claims.

Referring to the drawings, Figure l is a top or plan view of our improved device. Fig. 2' is a detail View, in central vertical section, through the same. Fig. 3 is a detail top or plan view of the lower circle.

In the accompanying drawings the letter a denotes an upper circle, and b thelower cirjcle, of our improved fifth-wheel; These circles may be formed to shape in any suitable manner, as by casting, and may be madeof any desirable material.

The uppercircle CL has a central opening 0 and aprojection d from its under surtace. Thisprojection is of areverse T shape in crosssection and extends downward from thecircle. This circle a'is of dish shape,-forming' a flange e, extending, preferably, around the circle, and holes f are provided for the reception of bolts or screws, by means of which the circle may be secured to a support, as the body part of a vehicle, or cross-piece secured thereto. v

The lower circle hires a central hub. g,.closel y w fitting the opening 0 in the upper circle, and

extending around this hub, 0n the side thereof, is a groove .h, into which a bolt 11 extends,

this bolt being supported in the upper circle a. A groovek is formed in the lower circle b of a shapegto correspond with the T-shaped SerialNO- VIZQ'YL llosnerlel.)

of the groove kare cut away, forming'openings Z of a size adapted to receive the projections 01. Two openings of this kind are preferably formed, located on diametrically opposite sides of the circle and in such position that the projections (1 shall lie midway between the openings when the two sections of the circle are in their normal positionin usethat is, with the axle of the vehicle in position to move it in, a direct line. The holt'i serves to prevent accidental separation of the two parts of the circle if in use it should happen that the projections (I should be located opposite the openings Z. It will be noted that such an instance-is liable to happen very rarely, and if such an instance should arise it is improbable that any excessive strain.

would be brought'to bear upon the parts which could notvbe withstood by'the bolt. Openings m are formed through the lower circle, through which bolts or screws may be inserted for the purposeof attaching this portion of the circle to its support.

We claim as our invention" 1. In a fifth-wheel, in combination, two circles, one provided with a groove having a narrow mouth, the opposite circle having a projection fitting-said groove, an opening into the groove to receive said projection, and a central hub on one of said circles fitting the central opening in theopposite circle.

2. In a fifth-wheel in combination, two cir cles one havinga groove with anal-row mouth, the opposite circle having a projection fitting said groove, an opening into the groove adapt; ed to receive said projection, and a peripheral flange located on one of the circles and adapted to encircle the opposite circle.

3. In a fifth-wheel in combination two circles,one having a groove with a narrow mouth and the opposite circle having a projection adapted to fit said groove, an opening into the groovejadapted to receive the projection, a hub on one of said circles to fit a central opening in the opposite circle, and a periph eral'fiange on one of the circles adapted to encircle the opposite circle.

4. In a fiftlmvheel, in combination two cirprevents separation of the parts. The lips MICHAEL J. ca rn-in AND JAMES PULLAR, or HARTFORD, connnci rcur. Y

cles. alower circle having a groove witha nar v toe nter. sa'i(1 opening and to fit) the groove, a.v

flange on jsh'eu pper circleadapted vto surround 'thelov ver eirele, and a central hub on the lower-oi 1Q adapted to fit aee'ntpral opening one; pper circle,- V

1511b: Ia full-wheel in combination, twocirele e',';one o ;whi chhas afgroove with a narrow rnon t h and an enlarged opening leading into "th'e ggrooye ,'aifprojeetion on the opposite-och clendapetedto enterthe enlarged opening" and to fiflzbhefgroove, 'a hub on one of the circles. fitting-neutral openingin the opposite oirole'faxid hayinga peripheralgroove and a bolt t estlin stfid groove.

; a r-Inn fifbh-wheel in combination an uoper secn'teito, one of the circles and adapted to oirolehavingeT-sl'm'perl projection, a periplr,

feral flange and e cemmlfopening, and slower circle having 2% groove 'adfipted 'to fil: ealdprojeobion and an enlarged openingjlead inginto the groove and adapted to receive said= pro jecnio'n, a hub on the lower oircle'adept'ed to fin the central opening inthe upperoirele,

secured to the nppepcircleand; aQeptedto rest in'said groover, ,7 U -MI'GHAELJ'.-GRIFFIN.' 1 JAMES PULLAR. :1 Witnesseeto signature of Mieh'neli J. Grilfin ARTHUR 'B. J ENKINS, WM; H. HULL. .Witnesses to signature of James Puller-r THOMAS F; FOLEY, ARTHUR B, JENKINS.

'andhaving a; peripheral groov eg end a bolt 

